Today's Datang is like the time of reform and opening up in later generations, one step a year, one appearance a year, and the speed of change is so fast that these people in Datang are unaware.

Only when they occasionally stop and reminisce about the past will they realize that they have become so powerful.

On the eve of the New Year, the number of buses has increased significantly.

The opening of railways has accelerated the transportation of goods, and it has also accelerated the flow of people.

In the past, I didn't go far because I didn't know when I would come back, let alone what kind of problems I would encounter on the way.

But now it's different, you can get from Chang'an to Luozhou in one day, the cost is not big, the time is also very short, and it is very convenient.

There are many businessmen who have begun to expand their business with the help of this railway line, some people have lost all their pants, and some people have made a lot of money, but in the current environment, most of them still make more money and lose less.

As long as you don't do it yourself, and your vision is very poor, you can keep your capital at the very least, so you won't starve to death.

A month ago, Li Chengguang proposed that he wanted to see the Datang railway with his own eyes and feel it in person.

Li Yuanji agreed, but Li Chengguang did not implement it immediately, but waited for another month.

During this month, Li Chengguang continued to collect all the information about trains and railways, and learned all the information he could get from the Railway Project Department of the Academy of Sciences, from the Railway Transport Administration, from officials, from merchants, and from ordinary people.

He even went to the Finance Department of the Railway Transport Administration to inquire about all the operations since the beginning of the construction of the railway, and of course, it was indispensable to go to Li Yuanji's henchman Ma Zhou to learn about his father's plans for the future of the railway.

After the New Year, Li Chengguang will be eight years old.

Compared with his peers, Li Chengguang is obviously more mature, one is that this era is a precocious era, which does not refer to the body, but to the spirit.

Weird, right? In fact, if you compare carefully, you will find that this is not strange at all, but it is very realistic, and the so-called precociousness of later generations can be regarded as more ignorant and naïve than in ancient times.

Lee Seung-gwang is not a prince, but he also realizes that he will have the potential to become a prince.

My father had this intention and was also cultivating himself, but he never decided to canonize himself as the crown prince.

Knowing the previous canonization cases, there is only one result, the current self has not been completely trusted by his father, so he did not canonize himself as the crown prince.

Although Li Chengguang's idea is also a little naïve, it is undeniable that he is already thinking about how to show his ability.

Maybe what he did would have a lot of loopholes and shortcomings, but with his understanding of his father, Li Chengguang was almost certain that this was not a problem.

The important thing is whether you do it yourself or not, and the important thing is whether your vision is wrong, as long as it is not a mistake of principle, a mistake of common sense is basically not a mistake.

Besides, he is not without advantages, he is young, this is his biggest advantage, if he doesn't do it, he will never know where his problems are, dare to do it, dare to expose his own problems, in Li Chengguang's view, this is not a deduction, as long as these exposed problems can be solved, and take warning, then the deduction can be turned into a plus.

If you don't fight for a great opportunity in front of you, who will feel sorry for yourself in the future?

"Fifth uncle, there shouldn't be so many people on the train on weekdays, right?" The young Li Chengguang sat next to the car window, sitting next to Ma Wu, and beyond was the aisle.

The passenger carriage is not large, with only four seats in a row and only one aisle in the middle that allows two people to pass in parallel.

Table? Sorry, there is no such thing in the ordinary car, the passenger car adopts the same arrangement as the ordinary passenger cars in the future, and the interval between the seats is okay, at least Ma Wu, a big guy who is nearly one meter nine tall, after doing it, the knee is about three fingers wide from the front seat.

For most ordinary people, this width is completely acceptable, but considering the long-distance driving, you can't lie down or do anything else, and after a long time, it will still make people physically and mentally exhausted.

"Well, it just happened to be in time for the peak transportation period, and in normal times, it is rare for a carriage to be full." Ma Wu nodded, he hadn't done a train before, even if he took it, it was a special train.

However, his subordinates have sat many times, and Li Yuanji agreed to Li Chengguang's request, so he arranged a task for himself and accompanied Li Chengguang.

After knowing what Li Chengguang was doing recently, Ma Wu also took him to his subordinates to understand the situation.

Of course, the word Spring Festival has not yet become popular, but the transportation during this period is indeed the prototype of Spring Festival.

"I see!" Li Chengguang nodded, confirming the answer to this question.

But this is not the end, he has learned about the transportation arrangements of the railway in recent times, and the frequency of departures is more intensive than in the past, and a large number of passenger trains have been added.

But even so, each carriage is still overcrowded, and now even the aisles are standing with a large number of passengers, and even, it is very difficult for a person to walk from one end to the other, and it is not an exaggeration to describe it as airtight.

"Huh? What are these people doing out there? "The trees and crops outside the window are rapidly retreating, and there are a few men in uniform standing on the ground next to the railway, holding the horses in their hands tightly, and they seem to have flags and windproof lamps on their bodies?

But it's daytime, so it's understandable to carry a flag, but what is it doing with a windproof oil lamp?

"Those people are guides, and normally they stay in one place, and if there is a problem with the train ahead, they will run in the opposite direction on their horses until they meet the next group of guides, and relay the news to them, and if they meet a train, they will notify the train to stop and wait by the flag in their hands, or the oil lamp. In addition to this, they also have a duty to remind trains to maintain a safe distance to avoid train collisions that could cause unnecessary damage. Ma Wu explained the role of the guides.

In modern times, there is GPS, there is Beidou, the Tang Dynasty has nothing, can only rely on manpower to solve this problem, and at the same time, in order to prevent the guide from making mistakes, or forgetting a certain thing, so it is equipped with a guide team of six people, and a team is arranged every ten miles.

However, due to the nature of the work of the guides, most of the guides are young adults recruited from nearby villages.

The time is full-day, and the actual full number is five, because at any given time, there is always one person in the guide team on vacation.

They adopted a rotation system, six people, each of them had one day off in six days, and whoever had their turn rested, and the rest of the time stayed next to the railway.

In order to accommodate this work, a detailed division of labor was also carried out, with two during the day and three at night, so as to ensure that someone was always at work.

Besides, this job is not tiring, but it is more tiring, but for the people around, this is a good job, not to mention the high salary, and it is also idle.

Li Chengguang still nodded, constantly calculating and inferring in his mind.

In fact, it is easy to calculate the capacity of a railway, you just need to know how long it will take for each model to complete the journey, and how long it will take to distance the safe trains.

As long as we can do this and ensure that there are no mistakes in every link, we can maximize the role of a railway.

But this is obviously impossible, and in order to prevent problems, the railway transport authority has set up a safety limit, which is a quarter of an hour, that is, half an hour.

However, in practice, this time is often increased, such as one and a half minutes, that is, forty-five minutes or forty minutes is the safe distance.

This will affect the journey of several trains per day, but it is undeniable that it can greatly ensure safety, which is very important and what Li Yuanji cares about the most.

If you want to increase the railway capacity, under the premise of ensuring the current safety system, it is unrealistic to build a new railway, the investment is too large, the cycle is too long, and the lines are completely duplicated, and the gains outweigh the losses.

Then the best way should be to increase the speed of the train, the speed is faster, the same time will run far, so that the safety time can be shortened correspondingly, but in terms of personnel, it must be more systematic training, but in this way, the staffing will be more, the cost will be greater, and the safety can not be guaranteed.

Then, a beacon tower should be built, and the guide team should be inside the beacon tower, and wolf smoke should be used during the day and firelight at night to remind the train whether it should slow down or stop, so that the requirements for personnel are not so high, and the timeliness will be faster. Li Chengguang thought about his plan for improving the railway, and the more he thought about it, the more he felt that this plan was very reliable.

The speed of the train increases, this is only a matter of time, the Academy of Sciences has not given up on this aspect of research, and the scale of the train project department is getting bigger and bigger, and the investment has increased a lot.

Come up with a corresponding plan in advance, and then demonstrate, modify, and wait until the new train comes out, it can be quickly put into use, which greatly saves valuable time.

Li Chengguang decided to record this idea of his own into his travel perception, and then when he returned to Chang'an, he came up with a complete travel perception, or travel report, which was counted as the result of this trip.

Of course, how can this trip be so simple? Li Chengguang has a small calculation in his heart, although the railway is strong, but it is only one of them, as the future prince, how can he focus all his attention on this aspect?

With the help of this trip, so as to get in touch with more things, this is the purpose of Li Chengguang.